Full Size headphone similar to Etymotic ER-4, for use with FIIO X3, on wide range of music

Etymotic ER-4 have been my headphones of choice for a few years now, and I would now like to find a full-size 'equivalent' to them, this to compliment a FIIO X3. I listen to a mix of music, ranging from hard rock (Black Flag, Emo) to folk (Balkan chorus, Swedish fiddling) to classical (Glenn Gould, lute music, etc.) to Hurdy-Gurdy.

The Shure 1440 has an apparently similar frequency response. Are there other similar headphones that you can recommend? Comfort is important, especially considering my over-large head. My price range is ~100-400$.

Should I even bother trying to find an equivalent, given how good the Etymotics are?